linux-kernel - Re: [PATCH REPOST] IB/ehca: In case of lost interrupts, trigger EOI to reenable interrupts

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Message-ID: <18512.57420.267003.723681@cargo.ozlabs.ibm.com>
Date:	Thu, 12 Jun 2008 18:37:32 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	Roland Dreier <rdreier@...co.com>
Cc:	Stefan Roscher <ossrosch@...ux.vnet.ibm.com>,
	Roland Dreier <rolandd@...co.com>,
	"LinuxPPC-Dev" <linuxppc-dev@...abs.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"OF-EWG" <ewg@...ts.openfabrics.org>,
	general@...ts.openfabrics.org, fenkes@...ibm.com,
	raisch@...ibm.com, hnguyen@...ibm.com, TKLEIN@...ibm.com,
	THEMANN@...ibm.com
Subject: Re: [PATCH REPOST] IB/ehca: In case of lost interrupts, trigger EOI to reenable interrupts

Roland Dreier writes:

>  > > So just to be clear: this is a workaround for a hardware/firmware bug?
> 
>  > Yes it is.
> 
> OK, so paulus et al... does it seem like a good approach to call H_EOI
> from driver code (given that this driver makes tons of other hcalls)?

If this workaround is approved by the relevant hardware & firmware
folks, and demonstrably fixes the bug, then I am happy with it.

Paul.
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